
<template>
    <h4>当前求和为：{{sum}}</h4>
    <button @click="sum++">点我++</button>
    <hr>
    <h2>姓名：{{name}}</h2>
    <h2>年龄：{{age}}</h2>
    <h2>薪资：{{job.j1.salary}}K</h2>
    <h3 v-show="person.car">座驾信息：{{person.car}}</h3>
    <button @click="name+='~'">修改姓名</button>
    <button @click="age++">增长年龄</button>
    <button @click="job.j1.salary++">涨薪</button>
    <button @click="showRawPerson">输出最原始的person</button>
    <button @click="addCar">给人添加一台车</button>
    <button @click="person.car.name+='!'">换车名</button>
    <button @click="changePrice">换价格</button>
</template>

<script>
    // 变成原始数据(非响应式)
    import {ref,reactive,toRefs,toRaw,markRaw} from 'vue'
    export default {
        name: "toRawAndToMarkRow",
        setup(){
            //数据
            let sum = ref(0)
            let person = reactive({
                name:'张三',
                age:18,
                job:{
                    j1:{
                        salary:20
                    }
                }
            })
            // 由响应式变成非响应式的
            function showRawPerson(){
                const p = toRaw(person)
                p.age++
                console.log(p)
            }

            function addCar(){
                let car = {name:'奔驰',price:40}
                person.car = markRaw(car)// 标记之后person.car不能成为响应式的(但是数据是改了)
            }

            function changePrice(){
                person.car.price++
                console.log(person.car.price)
            }

            //返回一个对象（常用）
            return {
                sum,
                person,
                ...toRefs(person),
                showRawPerson,
                addCar,
                changePrice
            }
        }
    }
</script>

